@jess.zzz To answer your question, you are correct in identifying D as weakening to the hypothesis in the stim. However, keep in mind that the question stem asks which answer choice most weakens, and it seems to me that A does a better job of weakening because it offers a compelling alternate explanation.
@jess.zzz To answer your question, you are correct in identifying D as weakening to the hypothesis in the stim. However, keep in mind that the question stem asks which answer choice most weakens, and it seems to me that A does a better job of weakening because it offers a compelling alternate explanation.